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At least 145 records · Page 8Linked to original sources
PubMed1995

Using JPEG image compression to facilitate telemedicine.

Economical applications of teleradiology and telemedicine are limited to the existing telephone network infrastructure, which greatly limits the speed of digital information transfer. Telephone lines are inherently slow, requiring image transmission times to be unacceptably long for large, complex, or numerous images. JPEG (Joint Photographic Experts Group) image transmission has been shown to compress images to 10% of the original file size without a noticeable change in the quality of the image. This study was carried out to assess the quality of medical diagnostic images after JPEG compression and decompression. X-rays, computed tomography scans, and ultrasound samples were compressed and decompressed using JPEG. The compressed JPEG images were indistinguishable from the original images. The JPEG images were approximately 10% of the original file size. This would reduce image transmission times by 90% (eg, an unacceptable time of 50 minutes would be reduced to an acceptable time of 5 minutes). JPEG can be used to optimize teleradiology and telemedicine.

Humans↗
PubMed1976

Systems analysis of computerized EKG processing center.

A functional description of a computerized system for analysis of electrocardiograms (EKGs) is presented. Although it is recognized that the diagnostic accuracy of the program is the critical parameter in determining system acceptance, other system features such as quality control, turn around time and cost are shown to be of high importance. A digital simulation of alternative configurations for on-line data acquisition is presented. The simulation predicts the system throughout and wait times in different phases of a telephone EKG transmission for combinations of interfaces, telephone lines and acquisition procedures. These results should be helpful in selecting the appropriate configuration for each special situation.

Computers↗
PubMed1984

Advances in the management of cardiac arrhythmias in children.

The authors discuss several recent developments in the diagnosis and management of cardiac arrhythmias in the young, focusing on areas in which the greatest progress has been made so that the pediatrician can incorporate these developments into his practice and participate more fully in the management of the patient requiring tertiary care.

Adolescent↗
PubMed1977

Cardiac telemetry exercise program.

To train cardiac consultants who interpret electrocardiogram rhythm strips from the field, we designed a series of prerecorded telemetered rhythms and discussions which can be sent into telemetry consoles. The patterns represent cardiac arrhythmias (eg, ventricular tachycardia, complete heart block, etc), as well as equipment problems (loose leads, misplaced leads, etc). We selected and modified some of the patterns of "Arrhythmia Resusci Anne" (Laerdal Medical Corporation), sent these through ambulance radios (to create a tone), recorded the signal on a standard tape recorder and dubbed in the monologue. The physician is asked to interpret the pattern and give instructions to the ambulance attendant. The answers and response times are recorded by the technician running the taped exercise. At the end of the quiz, the rhythms are replayed along with a discussion of each pattern.

Ambulances↗
PubMed1992

Palpitations and arrhythmias. Separating the benign from the dangerous.

Palpitations are a nonspecific symptom and do not necessarily imply serious heart disease. The vast majority of palpitations are benign. Goals in evaluation include detecting and identifying an arrhythmia, clarifying symptom severity, and defining the extent of underlying heart disease. If palpitations are infrequent and not accompanied by angina, congestive heart failure, or syncope, outpatient transtelephonic monitoring yields useful clinical information in most patients and is more cost-effective than Holter monitoring. Patients with major symptoms require hospitalization for aggressive cardiac evaluation and, possibly, electrophysiologic testing to guide treatment.

Arrhythmias, Cardiac↗